[antlr-interest] Urgent: how to "include" a grammar defined in a separate file

[Rupinder S. Gill]

(I posted a query a week ago but didn't receive a satisfactory response.)
I have a grammar for logical-expressions from which I need to build the
following:
- Java lexer and parser
- C# lexer and parser
- Two java tree-walkers
- One C# tree-walkers

The two java tree-walkers are in independent projects; both projects do
depend on the project that defines the grammar (and contains lexer and
parser).  C# lexer, parser and tree-walker can be in the same project.  I
want to keep only one copy of the common.g file (one containing parser and
lexer sections).  How do I this?

Grammar inheritance nor importVocab seem to be up to the task.  Or am I
missing something?

Thanks,
R.G.

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